Section 3 - Flag Table 5 : Projection Centre
Flag Tables for Section 3
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| Bit | Value | Meaning |
| 1 | 0 | North Pole is on the projection plane |
| 1 | 1 | South Pole is on the projection plane |
| 2 | 0 | Only one projection centre is used |
| 2 | 1 | Projection is bi-polar and symmetric |